package com.atguigu.eduservice.controller;


import com.atguigu.commonutils.R;
import com.atguigu.eduservice.entity.EduTeacher;
import com.atguigu.eduservice.entity.vo.TeacherQuery;
import com.atguigu.eduservice.service.EduTeacherService;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import java.util.List;

/**
 * <p>
 * 讲师 前端控制器
 * </p>
 *
 * @author testjava
 * @since 2020-09-09
 */
@Api(description = "讲师管理")
@RestController
@CrossOrigin  //解决跨域问题
@RequestMapping("/eduservice/edu-teacher")
public class EduTeacherController {

    @Autowired
    private EduTeacherService teacherService;

    //查询讲师表所有数据（rest中查询用get请求）
    //rest风格
    @ApiOperation(value ="所有讲师列表")
    @GetMapping("findAll")
    public R findAllTeacher(){

        List<EduTeacher> list = teacherService.list(null);
        return  R.ok().data("items",list);
    }


    //逻辑删除讲师的方法
    //PathVariable  得到路径参数的值
     @ApiOperation(value ="根据ID删除讲师")
     @DeleteMapping("{id}")
     public R removeById(
             @ApiParam(name ="id",value ="讲师ID",required = true)
             @PathVariable String id
                              )
     {

      boolean flag = teacherService.removeById(id);
         if(flag){
             return R.ok();
         }else{
             return R.error();
         }
     }

     //分页查询讲师的方法
    //current:当前页
    //limit：每页记录数
    @ApiOperation(value="分页查询讲师信息")
    @GetMapping("pageTeacher/{current}/{limit}")
    public R pageTeacher(
            @PathVariable long current,
            @PathVariable long limit)
    {
        //创建page对象
        Page<EduTeacher>  pageTeacher = new Page<>(current,limit);
        //调用方法的时候，底层封装，把分层所有数据封装到pageTeacher对象里面
        teacherService.page(pageTeacher,null);
        long total = pageTeacher.getTotal();//总记录数
        List<EduTeacher> records = pageTeacher.getRecords();
        return R.ok().data("total",total).data("rows",records);
    }

    //4，条件查询带分页的方法
    @PostMapping("pageTeacherCondition/{current}/{limit}")
    @ApiOperation(value ="多条件分页查询讲师信息")
    public R pageTeacherCondition(
            @PathVariable long current,
            @PathVariable long  limit,  //表示这个值可以没有
            @RequestBody(required = false)  TeacherQuery teacherQuery){

        //创建Page对象
        Page<EduTeacher> pageTeacher = new Page<>(current,limit);
        //构建条件
        QueryWrapper<EduTeacher> wrapper = new QueryWrapper<>();
        //多条件组合查询
        //mybatis 动态sql
        String name = teacherQuery.getName();
        Integer level = teacherQuery.getLevel();
        String begin = teacherQuery.getBegin();
        String end = teacherQuery.getEnd();
        //判断条件值是否为空，如果不为空拼接条件
       if(!StringUtils.isEmpty(name)){
           //构造条件
           wrapper.like("name",name);
       }
       if(!StringUtils.isEmpty(level)){
           wrapper.eq("level",level);
       }
       if(!StringUtils.isEmpty(begin)){
           wrapper.ge("gmt_create",begin);
       }
       if(!StringUtils.isEmpty(end)){
           wrapper.le("gmt_create",end);
       }

       //排序
       wrapper.orderByDesc("gmt_create");




        //调用方法实现条件查询分页
        teacherService.page(pageTeacher,wrapper);
        long total = pageTeacher.getTotal();//总记录数
        List<EduTeacher> records = pageTeacher.getRecords();//数据list集合

        return R.ok().data("total",total).data("rows",records);
    }

    //添加教师接口的方法
    @PostMapping("addTeacher")
    @ApiOperation(value ="添加教师信息")
    public  R  addTeacher(@RequestBody EduTeacher eduTeacher){

        boolean save = teacherService.save(eduTeacher);
        if(save){
            return R.ok();
        }else{
            return R.error();
        }
    }

    //根据ID查询讲师的方法
    @PostMapping("getTeacher/{id}")
    @ApiOperation(value ="根据ID查询讲师信息")
    public R  selectById(@PathVariable String id){
        EduTeacher eduTeacher = teacherService.getById(id);
        return R.ok().data("teacher",eduTeacher);
    }


    //修改教师接口的方法
    @PostMapping("updateTeacher")
    @ApiOperation(value="修改教师信息")
    public R  updateTeacher(@RequestBody EduTeacher eduTeacher){
        boolean flag = teacherService.updateById(eduTeacher);
        if(flag){
            return R.ok();
        }else{
            return R.error();
        }
    }
}

